Download Nanosurf easyScan 2 STM Operating Instructions

THE TOOLS BAR
Noise Filter
Figure 19-4: Noise Filter. (left) unfiltered image of AFM measurement on HOPG, (right) filtered image
The Noise filter removes high frequency noise from the image, but applying the
filter will also decrease the resolution of the image. The Noise Filter is
implemented as a convolution with a 3×3 pixel Gaussian kernel function.
To apply the filter, activate the color map chart that is to be filtered, then click
the “Noise Filter” button in the Tools bar. A new measurement document with
the filtered data is created.
Tip
• Filters are especially useful for improving the appearance of 3D views.
• Applying filters may changes the result of the other tools. This may result
in incorrect results when evaluating sample roughness.
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